Chaosium 

Start your investigation with the core rulebooks.

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Investigator Handbook

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The Grand Grimoire of Cthulhu Mythos Magic

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Keeper Rulebook

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Monsters of the Mythos.

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Deities of the Mythos

Cthulhu Bundle

Call of Cthulhu 7e

Will you stand against the horrors of the night? Whether learned professor, nosy journalist, or hard-hitting detective, investigators need all the help they can get. Let this book be your guide. The Investigator Handbook is an essential player's aid for the Call of Cthulhu7th Edition roleplaying game. Written for those who will be playing the roles of investigators, the Investigator Handbook contains expanded rules for creating players characters, a wealth of over 100 occupations and skill descriptions, as well as guidance on getting the most from the game. What's more, there's a range of organizations for your investigator to belong to, detailed information about the classic 1920s setting, equipment and weapons for both the 1920s and modern day, and expert tips and advice for all budding investigators. No self-respecting investigator of the Cthulhu Mythos should be without it!

Contained within are gathered spells drawn from over thirty years of Call of Cthulhu supplements and scenarios. Each spell has been revised for the Call of Cthulhu 7th Edition game, including optional Deeper Magic for the most powerful of Mythos sorcerers and monsters, with which to beguile and confound investigators. Packed full of advice and guidance on diverse matters including spell names, elements of spell casting, magical components, and astronomical considerations. Plus flawed spells, ley lines, folk magic, and the magic of the Dreamlands. Use this grimoire as a resource, a play aid, and as inspiration when designing scenarios. The Grand Grimoire of Cthulhu Mythos Magic is an essential supplement for Keepers of Arcane Lore.

The Keeper Rulebook, contains the core rules, background, guidance, spells, and monsters of the game. It is everything you need for Call of Cthulhu at your fingertips, and will enhance all of your games. The Keeper Rulebook is intended for use by the Keeper of Arcane Lore—the Game Master who will present the scenario to the other players.

Here you know the horrors of emptiness, the nightmares and the unspeakable Laurers.
Ancient secrets, whispering doctrines, and collected facts about the aliens and otherworldly horrors of the Cthulhu myth. A cavalcade of monsters and god-like alien intelligences beyond human understanding, all vividly detailed and depicted. With over 250 entries to inspire countless adventures.
The information inside is designed to bring to life the creatures and bizarre races of the Cthulhu myth at the game table, as well as all manner of great ancients, outer gods, elder gods, avatars, and unique beings.
Their history and statistics updated and revised for the Call of Cthulhu 7. Edition game (and Pulp Cthulhu).

Malleus Monstrorum - Mythos Bestiary

Fundamental truths of the cosmos herein lie, to be used to support and inspire countless adventures by bringing Cthulhu, Hastur, Azathoth, and many others to your games. With over 110 entries concerning Great Old Ones, Outer Gods, Elder Gods, Avatars, and Unique Beings, this tome supplies a plethora of ideas to immerse your campaigns and scenarios deep in the heart of Cthulhu Mythos lore.

Join the adventure